Gaseous-fuel mixer.



T. COOK.

GASEOUS FUEL MIXER..

APPLICATION FILE-D mme?, 1913.

Patented Nov. 18, 1913.

S14 vemlz sek-.-

@9i/kwam@ taamx TI-IOMAS COOK, F INDIANA, 13ENNSYLVANIA.

GAsEoUs-FUEL MIXER.

Specicaton of Letters Patent.

Patented N 0V; 18, 1913.

Application led February 27, 1913i Serial No. 751,036).

lTo all 'wh-0m t may) concern: Be it known that I, THOMAS Coon, a citizen of theUnited States, residing at Indiana, in the county of Indiana and State of Pennsylvania, have invented vcertain new and useful Improvements in Gaseous-Fuel Mixers; and I do declare the following to be a full, clear, and exact description of the invention, such as lwill enable others skilled in the art to which it appertains to make and use the same.

Thisinvention relates Ato gas, `either' artilicia'll or natural, and more especially to the devices for mixing air and gas so that perfeet combustion may-ensue; and the object 'of the saine is to produce an automatic mixer preferably disposed within the service pipe and automaticallyactuated by variations in the pressure, so that the 'gas when sumed will be thoroughly mixed with theit reaches the burners where it is to be conair which 'it contains.' This object 1is carried out by constructing the mixer inthe" =manner hereinafter more fully described and claimed, and as shown in the drawings wherein- Figure 1 is a longitudinal section of thisdevice in placewithin a service pipe. Fig. 2 is a view showing all parts of the device in perspective as disconnected and detached Figs. 3 and 4 arecross sections on the lines 3-3' and 4 4 respectively of Fig. 1. Figs. 5, 6 and 7 areperspective details of parts. Y l. Most gas used yfor illuminating and heat# ing purposes vneeds a considerable proportion'of air mixed with it before it will burn thoroughly, equally, constantly, and satisfactorily. For heating purposes this air is mixed with the gas liberally so as to produce what is known as the4 blue flame having extreme yheat and giving oli' not much light. For illuminating purposes the air and gas are purposely mixed when the gas' is manufactured, the object being. to chargethe gas withas large a proportion of air -as is possibleand-yet produce 'good results. With natural gas, however, the -proportion of air and gas varies for different wells and at different times and under -diEerent conditions, and it is well known j that the pressure varies almost constantly.

The purpose'of the present invention is to introduce into the service pipe between the gas main 4and the various points 'of consumption within a building, an autoi'iiatic` Coming now more particularly to the details of construction as illust-rated 4,in the drawings herewith, the numeral 1 designatos a casing which is preferably a piece of tube of-light brass or copper; and ifthe present invention is made in sizes to fit service pipes ofvarious sizes, as I prefer, this casing willbe of the proper diameter and of a length proportionate thereto.4 Both ends of the casing are open, and across the inlet end is a spider or bridge 2 having through 'its center a slot 3, while al similar spider or bridge 4 is secured across its inf ner or outlet end and provided with a holfe 5 at its center. These bridges may be separate pieces of metal, or they may be cut from the sheet metalof which the casing is composed, at the time it is stamped, and bent across the ends ofthe same and soldered or brazed in place in any suitable manner. Disposed within 'and along the axis of said casing is a shank which may well be made from a light strip of sheet metal,v initially -lat throughout its length, reduced in width for about a 'third of its length so as to form what might be termed apin 6 which plays freely through the hole 5, and the remote end of itsf'reniaining portion is given a twist 7 .which plays freely through the slot 3. Around the pin .6 is disposed an expansivecoiled spring 8, be tween'the inner face of the bridge-and the shoulder 9 which is located between the pin 6 and the larger portion o f the shank'.

I might say at this pointthat if the entire device is disposed in an upright' service pipe, the y spring might be omitted, but in any casegfits force must'be such as'to. normally overcome the ordinary pressure or flow ofthe gas, but to yield to lthe same during increases or pulsations in it. Mounted on the shank as vthus constructed isa group of disks. -As shown in the drawings there are, six, the first towardthe inlet end of the casing being solid as seen at 10 and. peripherally somewhat smaller than the interior. diameter of the casing so that in 'eli'ect it forms a spreader, the next disk 11 being provided with rather large holes 12, the 'nextdisk 13 being vin turn pierced with A a .series ofsinaller holes 14 and the three ilu 'i ing the d other disks duplicating 'the arrangement and construction just described. `Peripherally the. perforated disks are by preference only slightly smallerv than. the bore ot' the casing, so that vthere is little or no es cape for the fluid around their edges, and it is therefore forced to. pass through'their perforations; but the spreader disksY compel the tiuid to pass around their edges as willbe clear. ri`liis group of disks therefore constitutes an agitator because it4 creates a number ot' tortuous passages or channels throughout the length of the casing and along which the fluid must low. Said disks may be mounted on the shank in any suitableimanner, but by preference l provide them with slots l5 at their centers or' a size to eloselyembrace the shank 17 between its shoulder 9. and the inner end of its twist T, and between each two disksa collar 16 of any suitable material and size is closely engaged with said shank so as to hold the disks separatedfrom each-other. aHowever, any other suitable arrangement for holdon the shank might be adopted.

ln use this device is inserted within a service pipe S near the meter and on' either sidey thereof, but between the 'gas main and the point of consumption, and the service pipe closed to the external air. lfvien now the flows through this pipe the pulsations cr variations in the pressure constantly i i the shank and its disks longitudinally i hin the guides formed by the slot and the hole andv as it i'ioves the slipping ot thel twist 7 thr ugh said slot causes it to rotat to an extent d lent upon the pitch.

t io; the bridge are the nrst delleetor plate, then passed through the larger holes in the .tirst perforated plate andthe smaller holes in the second perforated plate, are then thrown outward again by the next detlector plate, and repeat the operation through the l'astgtwo perforated plates, and might repeat'it again it the group were duplicated. I h'nd byv experience that. the agitation thus vimparted to the fluid causes the automatic mixture of the pure gas and the air which the fluid contains, with the result that the .time it reaches the point of combustion it .burns with a steady tlame as is not the case where gasand especially natural gas-is permitted to flow direct to the burner.

*While have ,illustrated the device as disposed within a horizontal service pipe S, it is obvious that it might be placed in an uprightservice pipe, and as, above .suggested the spring' might then be omitted.

rihe materials and proportions of parts are not essential, nor is the number or exact construction of the disks.

llihat vis claimed as new is:

i. i mixer for the purpose set forth consisting of a tubular casing through which passes the fluid to be mixed, a shank 1novably disposed along theaxis oitl said casing yielding means bearing it normally toward the inlet the fluid, means for imparting rotation to the shank when moved' in either direction, and agitating devices carried by said shank. 1'

Q. mixer for the purpose set forth con sisting of a tubular casing through which passes the tluid to be mixed, a shank movably disposed longitudinally in said casing, yielding means for bearing it ljnorinally toward the inlet oi' the fluid and simultaneously impart-ing rotation to it, a group ot' disks disposed uponI said shank and provided with holes of various sizes, impertorate spreaders also strung upon-the shank and Ltoriningpart of said group, and spacing collars tastaround the shank betweenl the `various disks. 3. ln a mixer ot the class described, 'the combination with a tubular casing having bridges across its extremities, one pierced with a slot-'and the other with a hole; oa shank vhaving al pin at one end movably mounted within said hole and a twist at the other end inovably engaginfrr said slot, and agitating devices carried by said shank between its piu end and its twist end.

4i. in a mixer of the class described, the combination with a tubular casinghaving bridges across its extremities, onel pierced with a slot and the other with a hole; ci a shank having pin at one end Inovably .en said shoulder and the bridge haring the hole through its body, and an agitator' mounted on the shank be tween its pin end and its twisted end.

5. In a mixer ot' the class described, the

combination with a tubular casing having bridges across its extremities, one pierced with a slot and the other with a hole; of a shank having a pin at one end movably mounted within said hole and a twist at the other end movably engaging said slot, a shoulder formed between the vpin end .and the body of the shank, a spring surround ing the pin between said shoulder andthe bridge having a hole through its body, a group of disks having perforations ot ifi'erent sizes through their bodies and slots througn their centers strung on the shank between its pin end and its twisted end, and collars surrounding this portion ot' the shank between said dis vs.

6. In a mixer of the class described, the

los

A:normanniv ,other end roovabiy engagingv said slot, a

group'oil disks having perfo-rations of different sizes through their bodies and slots through their centers strung on the shank, collars surrounding this portion of the shank between said disks, and a spring between the innermost disk and the bridge having the hole, for the purpose set forth.

7. In a mixer of the dass described, the Combination with a tubular casing having bridges across it, one pierced with a slot.

and the other with a hole; of a yshank mov-V ably mounted within said hole and having a ltwist movably engaging said slot, and agitating' devices carried by said shank hetween its -pin endand its twisted end.

In testimony whereof I have hereunto set my han" in presence of two subsoribing witnesse l THOMAS COOK. Witnesses:

H. A. BoGGs, S. vV. Dm. 

